You should know the location of the .pst file that you want to repair. See Outlook & Exchange/Windows Messaging Backup and Dual-Boot for information on file locations and ways to determine the location of a .pst file that you can see in Outlook.
When you run Scanpst.exe it performs numerous tests. If somehow it find errors, it asks whether you want to make a backup copy of the original file always say Yes, then try to correct the errors.
If you run Scanpst.exe against a .pst file that Outlook 2003 created for a local copy of Windows Data Recovery events and contacts lists, you will get an error message that you can ignore. See You Receive an Error Message When You Use the Inbox Repair Tool to Scan a .pst File
For badly corrupted PST files, try running Scandisk.exe (look under Programs Accessories System Tools) first, then Scanpst.exe, repeating 3-4 times until neither program returns an error. We've know this technique to restore data that the user though was lost forever.
And if that doesn't do it, you can try our tips to repair a 2gb Personal Folders file or Offline Folders in Microsoft Outlook.
If the file is on an NTFS volume, you can't use Scandisk.exe so easily. One approach, for Windows 2000, is to open the drive in My Computer and use the Tools menu commands to scan the disk. You may need to restart Windows for the scan to run.
You can use Scanpst.exe not only on PST files, but also on offline folder .ost files. If an OST file is corrupted beyond the ability of Scanpst.exe to repair it, you will need to change the settings for the Exchange Server service (Tools Services) to use a new OST file, and then synchronize it with the server.
Another way is to use a hex editor remove a single byte from the middle of the PST file, then run Scanpst. A hex editor is a tool for editing raw files; every Windows shareware site has several to choose from. Eugene McCarthy of FAO Headquarters in Rome recommends the free iHex editor, which loads only 64kb of the file at a time, making it ideal for tinkering with extremely large PST files. For simple Scanpst repairs, Eugene recommends changing the first byte of the PST file from hex 21 to 00.
There is no comparable program for cleaning up corrupted Personal Address Book (.pab) files. You may be able to view and recover PAB data by opening the file with a hex editor.
If anyhow still you are not able to recover your corrupted file you can try Outlook Pst repair software. This software gives PST repair, PST Password Recovery and Split PST under one roof. The support to all the versions of Outlook, interactive interface, work through each corruption issue and other capabilities make this PST recovery software worth.
